11320321331 has 16 divisors (see below), whose sum is σ = 12488974080. Its totient is φ = 10175323680.

The previous prime is 11320321307. The next prime is 11320321343. The reversal of 11320321331 is 13312302311.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11320321331 is a prime.

It is a super-2 number, since 2×11320321331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11320321531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 574220 + ... + 593606.

It is an arithmetic number, because the mean of its divisors is an integer number (780560880).

Almost surely, 2^11320321331 is an apocalyptic number.

11320321331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11320321331 is a deficient number, since it is larger than the sum of its proper divisors (1168652749).

11320321331 is a wasteful number, since it uses less digits than its factorization.

11320321331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19994.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 11320321331 its reverse (13312302311), we get a palindrome (24632623642).

The spelling of 11320321331 in words is "eleven billion, three hundred twenty million, three hundred twenty-one thousand, three hundred thirty-one".